Stadium: Court 15 Round: 26 Ground: Hardcourt indoor
| ITF Portugal F9 | 2018/06/18 14:20 | Niklas Schell v Mitjana, Leny | 6-3,2-6,3-6 |
| ITF M25 Plaisir | 2021/09/15 11:45 | Haerteis, Johannes v Mitjana, Leny | 4-6,6-7 |
| ITF M25 Plaisir | 2021/09/13 15:25 | Mitjana, Leny v Pierre, Hugo | 6-1,6-0 |
| ITF M25 Plaisir | 2021/09/13 09:35 | Hendrik Jebens v Mitjana, Leny | 7-5,2-6,4-10 |
| ITF M25 Plaisir | 2021/09/12 11:00 | Adrien Gobat v Mitjana, Leny | 4-6,1-6 |
| ITF - M15 Bressuire | 2020/01/21 12:35 | Mitjana, Leny v Cornut-Chauvinc, Antoine | 6-7,1-6 |
| Troyes, Singles Qualifying M-ITF-FRA-13A | 2019/07/25 16:00 | Mitjana, Leny v Hamou, Maxime | 6-2,3-6,0-6 |
| Troyes, Singles Qualifying M-ITF-FRA-13A | 2019/07/24 15:00 | Davydov, Ivan v Mitjana, Leny | 2-6,2-6 |
| Challenger - Pau | 2019/02/25 13:20 | Norbert Gombos v Mitjana, Leny | 6-4,6-1 |
| ITF M25 Plaisir | 2021/09/15 07:55 | Mora, Maxime v Niklas Schell | 2-6,4-6 |
| ITF M25 Plaisir | 2021/09/13 13:25 | Niklas Schell v Thomas Deschamps | 6-4,7-6 |
| ITF M25 Plaisir | 2021/09/13 10:15 | Niklas Schell v Sinius, Warren | 2-6,6-4,10-8 |
| ITF M25 Plaisir | 2021/09/12 12:30 | Niklas Schell v Max Cunat | 6-4,6-4 |
| ITF M25 Eupen | 2021/09/08 07:30 | Mariano Kestelboim v Niklas Schell | 6-3,6-3 |
| ITF M15 Allershausen | 2021/09/02 08:55 | Mats Rosenkranz v Niklas Schell | 6-3,7-6 |
| ITF M15 Allershausen | 2021/09/01 12:05 | Milan Welte v Niklas Schell | 6-3,2-6,3-6 |
| ITF M25 Ueberlingen | 2021/08/19 10:00 | Niklas Schell v Esteve Lobato, Eduard | 6-7,1-6 |